/// <summary>
/// Converts a buffer model to the GC format
/// </summary>
/// <param name="model">The model to converter</param>
/// <param name="optimize">Whether to optimize the attaches</param>
/// <param name="ignoreWeights">If conversion should still happen, despite weights existing</param>
/// <param name="forceUpdate">Whether to convert, regardless of whether the attaches are already GC</param>
public static void ConvertModelToGC(NJObject model, bool optimize = true, bool ignoreWeights = false, bool forceUpdate = false)
{
if (model.Parent != null)
{
throw new FormatException($"Model {model.Name} is not hierarchy root!");
}
if (model.AttachFormat == AttachFormat.GC && !forceUpdate)
{
return;
}
if (model.HasWeight && !ignoreWeights)
{
throw new FormatException("Model is weighted, cannot convert to basic format!");
}
AttachHelper.ProcessWeightlessModel(model, (cacheAtc, ogAtc) =>
{
// getting the vertex information
Vector3[] positions = new Vector3[cacheAtc.vertices.Length];
Vector3[] normals = new Vector3[positions.Length];
for (int i = 0; i < positions.Length; i++)
{
var vtx = cacheAtc.vertices[i];
positions[i] = vtx.Position;
normals[i] = vtx.Normal;
}
// getting the corner information
int cornerCount = 0;
for (int i = 0; i < cacheAtc.corners.Length; i++)
{
cornerCount += cacheAtc.corners[i].Length;
}
Vector2[] texcoords = new Vector2[cornerCount];
Color[] colors = new Color[cornerCount];
Corner[][] corners = new Corner[cacheAtc.corners.Length][];
ushort cornerIndex = 0;
for (int i = 0; i < corners.Length; i++)
{
BufferCorner[] bufferCorners = cacheAtc.corners[i];
Corner[] meshCorners = new Corner[bufferCorners.Length];
for (int j = 0; j < bufferCorners.Length; j++)
{
BufferCorner bcorner = bufferCorners[j];
texcoords[cornerIndex] = bcorner.Texcoord;
colors[cornerIndex] = bcorner.Color;
meshCorners[j] = new Corner()
{
PositionIndex = bcorner.VertexIndex,
NormalIndex = bcorner.VertexIndex,
UV0Index = cornerIndex,
Color0Index = cornerIndex
};
cornerIndex++;
}
corners[i] = meshCorners;
}
bool hasUVs = texcoords.Any(x => x != default);
// if it has no normals, always use colors (even if they are all white)
bool hasColors = colors.Any(x => x != Color.White) || !normals.Any(x => x != Vector3.UnitY);
// Puttin together the vertex sets
VertexSet[] vertexData = new VertexSet[2 + (hasUVs ? 1 : 0)];
IndexAttributeParameter iaParam = new() { IndexAttributes = IndexAttributes.HasPosition };
if (positions.Length > 256)
{
iaParam.IndexAttributes |= IndexAttributes.Position16BitIndex;
}
vertexData[0] = new VertexSet(positions, false);
if (hasColors)
{
iaParam.IndexAttributes |= IndexAttributes.HasColor;
if (colors.Length > 256)
{
iaParam.IndexAttributes |= IndexAttributes.Color16BitIndex;
}
vertexData[1] = new VertexSet(colors);
}
else
{
iaParam.IndexAttributes |= IndexAttributes.HasNormal;
if (normals.Length > 256)
{
iaParam.IndexAttributes |= IndexAttributes.Normal16BitIndex;
}
vertexData[1] = new VertexSet(normals, true);
}
if (hasUVs)
{
iaParam.IndexAttributes |= IndexAttributes.HasUV;
if (texcoords.Length > 256)
{
iaParam.IndexAttributes |= IndexAttributes.UV16BitIndex;
}
vertexData[2] = new VertexSet(texcoords);
}
// stitching polygons together
BufferMaterial currentMaterial = null;
Mesh ProcessBufferMesh(int index)
{
// generating parameter info
List <IParameter> parameters = new();
BufferMaterial cacheMaterial = cacheAtc.materials[index];
if (currentMaterial == null)
{
parameters.Add(new VtxAttrFmtParameter(VertexAttribute.Position));
parameters.Add(new VtxAttrFmtParameter(hasColors ? VertexAttribute.Color0 : VertexAttribute.Normal));
if (hasUVs)
{
parameters.Add(new VtxAttrFmtParameter(VertexAttribute.Tex0));
}
parameters.Add(iaParam);
if (cacheMaterial == null)
{
currentMaterial = new BufferMaterial()
{
MaterialAttributes = MaterialAttributes.noSpecular
};
}
else
{
currentMaterial = cacheMaterial;
}
parameters.Add(new LightingParameter()
{
LightingAttributes = LightingParameter.DefaultLighting.LightingAttributes,
ShadowStencil = currentMaterial.ShadowStencil
});
parameters.Add(new BlendAlphaParameter()
{
SourceAlpha = currentMaterial.SourceBlendMode,
DestAlpha = currentMaterial.DestinationBlendmode
});
parameters.Add(new AmbientColorParameter()
{
AmbientColor = currentMaterial.Ambient
});
TextureParameter texParam = new();
texParam.TextureID = (ushort)currentMaterial.TextureIndex;
if (!currentMaterial.ClampU)
{
texParam.Tiling |= GCTileMode.RepeatU;
}
if (!currentMaterial.ClampV)
{
texParam.Tiling |= GCTileMode.RepeatV;
}
if (currentMaterial.MirrorU)
{
texParam.Tiling |= GCTileMode.MirrorU;
}
if (currentMaterial.MirrorV)
{
texParam.Tiling |= GCTileMode.MirrorV;
}
parameters.Add(texParam);
parameters.Add(Unknown9Parameter.DefaultValues);
parameters.Add(new TexCoordGenParameter()
{
TexCoordID = currentMaterial.TexCoordID,
TexGenType = currentMaterial.TexGenType,
TexGenSrc = currentMaterial.TexGenSrc,
MatrixID = currentMaterial.MatrixID
});
}
else
{
if (currentMaterial.ShadowStencil != cacheMaterial.ShadowStencil)
{
parameters.Add(new LightingParameter()
{
ShadowStencil = cacheMaterial.ShadowStencil
});
}
if (currentMaterial.SourceBlendMode != cacheMaterial.SourceBlendMode ||
currentMaterial.DestinationBlendmode != cacheMaterial.DestinationBlendmode)
{
parameters.Add(new BlendAlphaParameter()
{
SourceAlpha = cacheMaterial.SourceBlendMode,
DestAlpha = cacheMaterial.DestinationBlendmode
});
}
if (currentMaterial.Ambient != cacheMaterial.Ambient)
{
parameters.Add(new AmbientColorParameter()
{
AmbientColor = cacheMaterial.Ambient
});
}
if (currentMaterial.TextureIndex != cacheMaterial.TextureIndex ||
currentMaterial.MirrorU != cacheMaterial.MirrorU ||
currentMaterial.MirrorV != cacheMaterial.MirrorV ||
currentMaterial.ClampU != cacheMaterial.ClampU ||
currentMaterial.ClampV != cacheMaterial.ClampV)
{
TextureParameter texParam = new();
texParam.TextureID = (ushort)cacheMaterial.TextureIndex;
if (!cacheMaterial.ClampU)
{
texParam.Tiling |= GCTileMode.RepeatU;
}
if (!cacheMaterial.ClampV)
{
texParam.Tiling |= GCTileMode.RepeatV;
}
if (cacheMaterial.MirrorU)
{
texParam.Tiling |= GCTileMode.MirrorU;
}
if (cacheMaterial.MirrorV)
{
texParam.Tiling |= GCTileMode.MirrorV;
}
parameters.Add(texParam);
}
if (currentMaterial.TexCoordID != cacheMaterial.TexCoordID ||
currentMaterial.TexGenType != cacheMaterial.TexGenType ||
currentMaterial.TexGenSrc != cacheMaterial.TexGenSrc ||
currentMaterial.MatrixID != cacheMaterial.MatrixID)
{
parameters.Add(new TexCoordGenParameter()
{
TexCoordID = cacheMaterial.TexCoordID,
TexGenType = cacheMaterial.TexGenType,
TexGenSrc = cacheMaterial.HasAttribute(MaterialAttributes.normalMapping) ? TexGenSrc.Normal : cacheMaterial.TexGenSrc,
MatrixID = cacheMaterial.MatrixID
});
}
currentMaterial = cacheMaterial;
}
// note: a single triangle polygon can only carry 0xFFFF corners, so about 22k tris
Corner[] triangleCorners = corners[index];
List <Poly> polygons = new();
if (triangleCorners.Length > 0xFFFF)
{
int remainingLength = triangleCorners.Length;
int offset = 0;
while (remainingLength > 0)
{
Corner[] finalCorners = new Corner[Math.Max(0xFFFF, remainingLength)];
Array.Copy(triangleCorners, offset, finalCorners, 0, finalCorners.Length);
offset += finalCorners.Length;
remainingLength -= finalCorners.Length;
Poly triangle = new(PolyType.Triangles, finalCorners);
polygons.Add(triangle);
}
/// <summary>
/// Converts the buffer data of a model to BASIC attaches
/// </summary>
/// <param name="model">The tip of the model hierarchy to convert</param>
/// <param name="optimize">Whether to optimize the data</param>
/// <param name="ignoreWeights">Convert regardless of weight information being lost</param>
/// <param name="forceUpdate">Still convert, even if the attaches are Basic already</param>
public static void ConvertModelToBasic(NJObject model, bool optimize = true, bool ignoreWeights = false, bool forceUpdate = false)
{
if (model.Parent != null)
{
throw new FormatException($"Model {model.Name} is not hierarchy root!");
}
if (model.AttachFormat == AttachFormat.BASIC && !forceUpdate)
{
return;
}
if (model.HasWeight && !ignoreWeights)
{
throw new FormatException("Model is weighted, cannot convert to basic format!");
}
AttachHelper.ProcessWeightlessModel(model, (cacheAtc, ogAtc) =>
{
// getting the vertex information
Vector3[] positions = new Vector3[cacheAtc.vertices.Length];
Vector3[] normals = new Vector3[positions.Length];
bool hasNormals = false;
for (int i = 0; i < positions.Length; i++)
{
var vtx = cacheAtc.vertices[i];
positions[i] = vtx.Position;
normals[i] = vtx.Normal;
if (vtx.Normal != Vector3.UnitY)
{
hasNormals = true;
}
}
if (!hasNormals)
{
normals = null;
}
// putting together polygons
Mesh[] meshes = new Mesh[cacheAtc.corners.Length];
Material[] materials = new Material[cacheAtc.corners.Length];
for (int i = 0; i < cacheAtc.corners.Length; i++)
{
// creating the material
Material mat = new();
BufferMaterial bmat = cacheAtc.materials[i];
if (bmat != null)
{
mat.DiffuseColor = bmat.Diffuse;
mat.SpecularColor = bmat.Specular;
mat.Exponent = bmat.SpecularExponent;
mat.TextureID = bmat.TextureIndex;
mat.FilterMode = bmat.TextureFiltering;
mat.MipmapDAdjust = bmat.MipmapDistanceAdjust;
mat.SuperSample = bmat.AnisotropicFiltering;
mat.ClampU = bmat.ClampU;
mat.ClampV = bmat.ClampV;
mat.MirrorU = bmat.MirrorU;
mat.MirrorV = bmat.MirrorV;
mat.UseAlpha = bmat.UseAlpha;
mat.SourceAlpha = bmat.SourceBlendMode;
mat.DestinationAlpha = bmat.DestinationBlendmode;
mat.DoubleSided = !bmat.Culling;
mat.IgnoreLighting = bmat.HasAttribute(MaterialAttributes.noDiffuse);
mat.IgnoreSpecular = bmat.HasAttribute(MaterialAttributes.noSpecular);
mat.UseTexture = bmat.HasAttribute(MaterialAttributes.useTexture);
mat.EnvironmentMap = bmat.HasAttribute(MaterialAttributes.normalMapping);
}
materials[i] = mat;
// creating the polygons
BufferCorner[] bCorners = cacheAtc.corners[i];
IPoly[] triangles = new IPoly[bCorners.Length / 3];
Vector2[] texcoords = new Vector2[bCorners.Length];
Color[] colors = new Color[bCorners.Length];
Triangle current = new();
for (int j = 0; j < bCorners.Length; j++)
{
BufferCorner corner = bCorners[j];
int vIndex = j % 3;
current.Indices[vIndex] = corner.VertexIndex;
if (vIndex == 2)
{
triangles[(j - 2) / 3] = current;
current = new Triangle();
}
texcoords[j] = corner.Texcoord;
colors[j] = corner.Color;
}
bool hasTexcoords = texcoords.Any(x => x != default);
bool hasColors = colors.Any(x => x != Color.White);
Mesh basicmesh = new (BASICPolyType.Triangles, triangles, false, hasColors, hasTexcoords, (ushort)i);
if (hasColors)
{
basicmesh.Colors = colors;
}
if (hasTexcoords)
{
basicmesh.Texcoords = texcoords;
}
meshes[i] = basicmesh;
}